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Olivier Schaetzle, Cees J. N. Buisman
《工程(英文)》 2015年 第1卷 第2期 页码 164-166 doi: 10.15302/J-ENG-2015046
在本文中,我们概述了盐度梯度技术的最新发展情况。在描述最先进盐度梯度技术的发展现状之前,我们首先介绍了盐度差能概念。本文以盐度梯度技术新兴领域中的新趋势作为结尾。
关键词: 盐度差能,压力延缓渗透,反向电渗析
《结构与土木工程前沿(英文)》 2023年 第17卷 第4期 页码 522-532 doi: 10.1007/s11709-023-0930-9
关键词: tunnel face stability cutterhead configuration aperture ratio pressure gradient support ratio
Development of an axial-type fan with an optimization method
Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,
《能源前沿(英文)》 2009年 第3卷 第4期 页码 414-422 doi: 10.1007/s11708-009-0038-5
关键词: axial-type fan gradient method free-vortex method design variable total pressure static pressure operating flowrate
张强,陆利蓬
《中国工程科学》 2003年 第5卷 第11期 页码 47-50
采用Fourier谱展开和紧致有限差分格式,选用两组共振三波为相干结构的初值,计算了其在零压和逆压梯度作用下的演化。对演化后期流场的2,4象限的运动进行了详细的分析。结果发现,在逆压梯度下,扫掠对雷诺应力的贡献要强于喷射。无论是在零压梯度还是逆压梯度下,uv和u2在法向的输运主要是靠Q2和Q4这两种运动来完成的。零压梯度下喷射部分对输运的贡献大于扫掠的部分。而在逆压梯度下喷射部分对输运的贡献明显减少,扫掠的作用要强于喷射。
《结构与土木工程前沿(英文)》 页码 1310-1325 doi: 10.1007/s11709-023-0997-3
关键词: sustainable concrete fly ash slay extreme gradient boosting technique squirrel search algorithm parametric analysis
Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI
《机械工程前沿(英文)》 2015年 第10卷 第2期 页码 187-197 doi: 10.1007/s11465-015-0339-9
In this paper, for the first time, the modified strain gradient theory is used as a new size-dependent Kirchhoff micro-plate model to study the effect of interlayer van der Waals (vdW) force for the vibration analysis of multilayered graphene sheets (MLGSs). The model contains three material length scale parameters, which may effectively capture the size effect. The model can also degenerate into the modified couple stress plate model or the classical plate model, if two or all of the material length scale parameters are taken to be zero. After obtaining the governing equations based on modified strain gradient theory via principle of minimum potential energy, as only infinitesimal vibration is considered, the net pressure due to the vdW interaction is assumed to be linearly proportional to the deflection between two layers. To solve the governing equation subjected to the boundary conditions, the Fourier series is assumed for w=w(x, y). To show the accuracy of the formulations, present results in specific cases are compared with available results in literature and a good agreement can be seen. The results indicate that the present model can predict prominent natural frequency with the reduction of structural size, especially when the plate thickness is on the same order of the material length scale parameter.
关键词: graphene van der Waals (vdW) force modi- fied strain gradient elasticity theory size effect parameter
Velocity gradient elasticity for nonlinear vibration of carbon nanotube resonators
Hamid M. SEDIGHI, Hassen M. OUAKAD
《结构与土木工程前沿(英文)》 2020年 第14卷 第6期 页码 1520-1530 doi: 10.1007/s11709-020-0672-x
关键词: velocity gradient elasticity theory nanotube resonators differential-quadrature method nonlinear vibration
Liang ZHAO, Linhua LIU,
《能源前沿(英文)》 2009年 第3卷 第4期 页码 381-388 doi: 10.1007/s11708-009-0057-2
关键词: closed-end micro-channel electrical double layer electro-osmotic flow induced pressure gradient Joule heating
Thuy-Anh NGUYEN; Hai-Bang LY; Van Quan TRAN
《结构与土木工程前沿(英文)》 2022年 第16卷 第10期 页码 1267-1286 doi: 10.1007/s11709-022-0842-0
关键词: slender beam shear strength gradient boosting optimization algorithms
Gradient-based compressive image fusion
Yang CHEN,Zheng QIN
《信息与电子工程前沿(英文)》 2015年 第16卷 第3期 页码 227-237 doi: 10.1631/FITEE.1400217
关键词: Compressive sensing (CS) Image fusion Gradient-based image fusion CS-based image fusion
Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete
《结构与土木工程前沿(英文)》 页码 1326-1340 doi: 10.1007/s11709-023-0014-x
Peiwen Liu, Carsten Mai, Kai Zhang
《化学科学与工程前沿(英文)》 2018年 第12卷 第3期 页码 383-389 doi: 10.1007/s11705-018-1718-7
Hydrogels with precisely designed structures represent promising materials with a broad application spectrum, such as for sensor, tissue engineering and biomimetic technology. However, with highly reactive compounds, the preparation of hydrogels still needs an efficient approach for desired distribution of each component within hydrogels. In addition, a method for in situ preparation of gradient hydrogels is still lacking. Herein, we report the formation of hydrogels with either uniform or gradient internal structures via a novel, simple but very efficient method by aerating ammonia gas (NH3 gas) into the solution of dialdehyde cellulose (DAC) and a diamine. As-prepared hydrogels exhibited uniform microscopic and chemical structure or gradient distribution of functional groups. Due to lots of aldehyde groups on DAC chains, functional hydrogels can be prepared by using diverse diamines. For instance, hydrogels prepared by using 1,6-hexanediamine as a cross-linker were responsive to pH values. Moreover, this controllable process of aerating NH3 gas allows the in situ formation of gradient hydrogels; for instance, by using cyanamide as a reaction counterpart, gradient hydrogels with gradient distributions of cyanide groups were prepared.
关键词: hydrogel uniform gradient dialdehyde cellulose ammonia gas diamine
Dongdong WANG, Jiarui WANG, Junchao WU, Junjun DENG, Ming SUN
《结构与土木工程前沿(英文)》 2019年 第13卷 第2期 页码 337-352 doi: 10.1007/s11709-018-0467-5
关键词: meshfree method landslide rainfall three-dimensional two-level gradient smoothing nodal integration
Effects of gradient concentration on the microstructure and electrochemical performance of LiNi
Wenming Li, Weijian Tang, Maoqin Qiu, Qiuge Zhang, Muhammad Irfan, Zeheng Yang, Weixin Zhang
《化学科学与工程前沿(英文)》 2020年 第14卷 第6期 页码 988-996 doi: 10.1007/s11705-020-1918-9
关键词: gradient concentration Ni-rich LiNi0.6Co0.2-Mn0.2O2 electrochemical performance lithium-ion battery
Experimental investigation on possibility of oxygen enrichment by using gradient magnetic fields
CAI Jun, WANG Li, TONG Lige, SUN Shufeng, WU Ping
《化学科学与工程前沿(英文)》 2007年 第1卷 第3期 页码 271-276 doi: 10.1007/s11705-007-0049-x
标题 作者 时间 类型 操作
Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages
期刊论文
Development of an axial-type fan with an optimization method
Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,
期刊论文
prediction and optimization design of sustainable concrete based on squirrel search algorithm-extreme gradient
期刊论文
Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory
Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI
期刊论文
Velocity gradient elasticity for nonlinear vibration of carbon nanotube resonators
Hamid M. SEDIGHI, Hassen M. OUAKAD
期刊论文
Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective boundary conditions
Liang ZHAO, Linhua LIU,
期刊论文
Predicting shear strength of slender beams without reinforcement using hybrid gradient boosting trees
Thuy-Anh NGUYEN; Hai-Bang LY; Van Quan TRAN
期刊论文
Preparation of hydrogels with uniform and gradient chemical structures using dialdehyde cellulose and
Peiwen Liu, Carsten Mai, Kai Zhang
期刊论文
A three-dimensional two-level gradient smoothing meshfree method for rainfall induced landslide simulations
Dongdong WANG, Jiarui WANG, Junchao WU, Junjun DENG, Ming SUN
期刊论文
Effects of gradient concentration on the microstructure and electrochemical performance of LiNi
Wenming Li, Weijian Tang, Maoqin Qiu, Qiuge Zhang, Muhammad Irfan, Zeheng Yang, Weixin Zhang
期刊论文